Machine for straightening and sizing tubular bodies made from pulp



H. PARKER.

MACHINE FOR STRAIGHTENING AND SIZING BODIES MADE FROM PULP.

APPLICATION FILED MAR. I, 1920.

Patented Apr. 12, 1921.

3 SHEETS-SHEET I.

H. PARKER.

MACHINE FOR STHAIGHTENING AND SIZING BODIES MADE FROM PULP.

APPLICATION FILED MAR. I, I920.

Patented Apr. 12, 1921.

3 SHEETSSHEET 2.

6 Gil/020v H. PARKER.

MACHINE FOR STRAIGHTENING AND SIZING BODIES MADE FROM PULP.

APPUCATION FILED MAR. h 1920.

1,374,318. Patented Apr. 12, 1921.

UNITED STATES PATENT OFFICE.

HOWARD PARKER, OF BERLIN, NEW HAMPSHIRE, ASSIGNOR TO BROWN COMPANY,

h OF BERLIN, NEW HAMPSHIRE, A CORPORATION OF NEW HAMPSHIRE.

MACHINE FOR STRAIGHTENING AND SIZING TUBULAR BODIES MADE FROM PULP.

Specification of Letters Patent.

Patented Apr. 12, 1921.

Application filed March 1, 1920. Serial No. 362,598.

To all whom it may concern:

Be it known that I, HOWARD PARKER, a citizen of the United States, and a resident of Berlin, county of Coos, State of New Hampshire, have invented certain new and useful Improvements in Machines for Straightening and Sizing Tubular Bodies Made from Pulp, of which the following is a specification.

The machine forming the subject matter of this invention is designed particularly for straightening, smoothing and sizing tubes or pipes made from pulp, and although it maybe adapted for other uses, the invention will be described as applied to the above mentioned work and the invention as illustrated being embodied in a machine of this character.

After tubes have been formed, for instance by the winding process as generally outlined in my co-pending application Serial No. 64,831 filed December 3rd, 1915, they impregnated and sometimes insulated, it is I often advisable to straighten these tubes and size them and smooth off any unevennesses in their outer surfaces. Again, after the tubes have been treated, there maybe a warping of one kind or another or imperfections which should be removed to put the tubes in the best possible condition for sale and use. This machine is designed to operate on tubes either before or after impregnation for the purpose of straightening them, shaping them, sizing them and smoothing the exterior surface.

In the drawings Figure 1 is a front view of the machine by which is meant the delivery end of the machine.

Fig. 2 is a side view looking from the right of the machine as shown vin Fig. 1, and

Fig. 3 is a side view looking from the left of the machine as shown in Fig. 1, and

showing the driving arrangement for the various sets of rolls.

By reference to Figs. 1 and 2 of the drawings, the general construction and mode of operation of the machine will be clearly apparent. On the base a which is long and narrow, there is mounted a succession of pairs of shafts, the first pair of shafts, as shown at the right of Fig. 2 of the drawings and indicated at b, 6, being horizontally disposed. The second pair of shafts, one of which is indicated at o, is vertically disposed. The next pair, (Z, (Z, is horizontally disposed and this alternation continues through the length of the machine. These shafts are mounted in suitable bearings and are provided with means for driving them which will be somewhat more particularly described hereinafter. To the ends of the shafts of each pair are secured cooperatively positioned grooved rolls, the horizontally arranged sets of rolls being numbered in the drawings from the receiving to the delivery end of the machine as 1, 3, 5, 7 and 9 and e the vertically arranged sets of rolls being numbered 2, 4c, 6, 8 and 10. By reference to Fig. 1 of the drawings, it will be seen that these sets of vertically and horizontally arranged rolls form a true round passage through which the tubes pass, being entered in the rolls at the receiving end of the machine and passing out from between the rolls at the delivery end of the machine.

Generally speaking, the radius upon which the concavity of the first pair of rolls 1, 1 is struck is of greater length than that of the lastpair of rolls 10. 10 and there is a gradual diminution of this radius of curvature from the receiving to the delivery end of the machine which, in one way of speaking, means that the hole which the tube enters at the receiving end of the machine is larger than the hole which the tube leaves at the delivery end of the machine.

The rolls 1, 1 at the receiving end of the machine are driven faster than the rolls 10, 10 at the delivery end of the machine and there is a regular diminution in the speed at which the rolls are driven from the receiving to the delivery end of the machine. This variation in the speed of these rolls is affected in the case illustrated by varying the diameter or number of teeth in the sprockets which receive the driving chains but it is obvious that there are many well known ways of effecting such a varia tion as is here described.

As a result of this diminution in the size of the opening through which the tubes pass and the variation in the speed it will be apparent that the tubes are sized accurately as to exterior diameter and brought to a perfectly true round form and at the same time are ironed due to the slipping of the rolls on the surface of the tubes which result in smoothing the exterior surface and giving somewhat of a polished effect. Fur.-

thermore, since for a considerable portion of its length the tube is held in a number of these sets of rolls any lengthwise warping or bending is eliminated and the tubes are delivered from the machine straight and true. 7

It may be observed that for the best results in straightening any lengthwise warping or bending of the tube, the machine should be long enough to accommodatea sufficient number of sets of rolls so that for a time during the passage of the tube through the machine it should be supported in the rolls for the greater portion of its length. 7 i

I claim as my invention 1. In a machine of the character described, a plurality of rolls having concave surfaces so arranged about a common axis as to define what is in effect a tubular passage through the machine from the. receiving to the delivery end, the concave sun faces of said rolls being generated about centers lying within the axial line of the passage and having radii gradually decreas ing in length from the receiving to the delivery end of the machine.

2. In a machine of the character described, a plurality of rolls having concave surfaces so arranged about a common axisas to define what is in effect a tubular passage through the machine from the receiving to the delivery end, the concave surfaces of said rolls being generated about centers lying within the axial line of the passage,

. and means for driving some of said rolls at V sage through the machine from the receiving to the delivery end, the concave surfaces of said rolls being generated about centers lying within the axial line of the passage and having radii gradually 'decreasing in length from the receiving to the delivery end of the machine, and means for dey driving some of said rolls at speeds different from the speeds at which others of said rolls are driven.

a. In a machine of the character described, a plurality of sets of rolls, the rolls of each set having concave surfaces co-- operatively positioned to define a substantially complete circle, said sets of rolls being 7 scribed, a plurality of sets ofvrolls the rolls of each set having concave surfaces coi operatively positioned to definea substantially complete circle, said sets of rolls being arranged in sequence and alternate sets of rolls being arranged with their axes angularly disposed with relation to the axes of r arranged in sequence from the receiving to the delivery end of the machine with the axes of the circles defined by the cooperating rolls of each set coincident the diameters of the circles defined by each set of rolls gradually diminishing from the receiving toward the delivery end of the'machine producing in effect a cylindrical passage through the machine the diameter of which is gradually reduced toward the delivery end of the machine.

7. In. a machine of the character described, a plurality of sets of rolls, the rolls of each set having concave surfaces cooperatively positioned to define a substantially complete circle, said sets of rolls being arranged in sequence with the axes of the circles defined by the cooperating rolls of each set coincident producing in effect a cylindrical passage through the machine and means for driving some of said sets of rolls at different speeds;

8. In a machine of the character described, a plurality of sets of rolls, the rolls of each set having concave surfaces 'co-v operatively positioned to define a substantially complete circle, said sets of rolls being arranged in sequence with the axes of the circles defined by the cooperating rolls of each set coincident producing in effect a cylindrical passage through the machine, and means for drivlng said sets of rolls and for decreasing the speed of sets of rolls near the delivery end below that of sets of rolls near the receiving end of the machine.

9. In a machine of the character described, a plurality of sets of rolls, the rolls of each set having concave surfaces cooperatively positioned to define a substantlally complete circle, said sets of rolls being arranged in sequence from the receiving to the delivery end of the machine with the axes of the circles defined by the cooperating rolls of each set coincident, the diameters of the circles defined by the sets of cooperating rolls gradually diminishing from the receiving to the delivery end of the machine, and means for driving said sets of rolls and for decreasing the speed of sets of rolls near the delivery end below that of sets of rolls near the receiving end of the machine.

10. In a machine of the character described, a plurality of rolls, the rolls of each set having concave surfaces cooperatively positioned to define a substantially complete circle said sets of rolls being arranged in sequence and alternate sets of rolls being arranged with their axes angularly disposed with relation to the axes of the adjacent sets of rolls, the axes of the circles defined by the cofiperating rolls of each set being coincident and the diameters of the circles defined by each set gradually decreasing from the receiving to the delivery end of the machine providing in effect a cy lindrical passage through the machine, the diameter of which is gradually reduced toward the delivery end of the machine, and means for drivin some of said sets of rolls at different speeds.

HOWARD PARKER.

Witnesses:

R. A. SMITH, E. F. BAILEY. 

